When different sections of the code specify different materials or methods, which shall govern?

When different sections of the code specify various materials or methods, the most restrictive requirement governs. This principle ensures the highest level of safety, quality, and performance in mechanical installations and practices. By adhering to the most stringent standards, potential risks are mitigated, which is essential in maintaining compliance with safety regulations and ensuring the longevity of installations.

This approach also prevents situations where less stringent provisions could be applied in scenarios where safety and reliability are paramount. Therefore, selecting the most restrictive option not only aligns with regulatory expectations but also embraces a best practice approach across the board in the field of mechanical code compliance.